Move enum to its own file

src/DotNetWorker.Core/Context/Features/DefaultInputConversionFeature.cs

@@ -195,7 +195,7 @@ private bool IsConverterFallbackAllowed(ConverterContext context)
             {
                 if (result is not null && result is ConverterFallbackBehavior fallbackBehavior)
                 {
-                    return fallbackBehavior == ConverterFallbackBehavior.Disallow ? false : true;
+                    return fallbackBehavior != ConverterFallbackBehavior.Disallow;
                 }
             }
 

src/DotNetWorker.Core/Converters/Converter/ConverterFallbackBehavior.cs

@@ -0,0 +1,27 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+namespace Microsoft.Azure.Functions.Worker.Converters
+{
+    /// <summary>
+    /// Specifies the fallback behavior for a converter.
+    /// The default behavior is <see cref="ConverterFallbackBehavior.Allow"/>.
+    /// </summary>
+    public enum ConverterFallbackBehavior
+    {
+        /// <summary>
+        /// Allows fallback to built-in converters. This is the default behavior.
+        /// </summary>
+        Allow = 0,
+
+        /// <summary>
+        /// Disallows fallback to built-in converters.
+        /// </summary>
+        Disallow = 1,
+
+        /// <summary>
+        /// Specifies the default fallback behavior as <see cref="ConverterFallbackBehavior.Allow"/>
+        /// </summary>
+        Default = Allow
+    }
+}

src/DotNetWorker.Core/Converters/Converter/ConverterFallbackBehaviorAttribute.cs

@@ -28,26 +28,4 @@ public ConverterFallbackBehaviorAttribute(ConverterFallbackBehavior fallbackBeha
             Behavior = fallbackBehavior;
         }
     }
-
-    /// <summary>
-    /// Specifies the fallback behavior for a converter.
-    /// The default behavior is <see cref="ConverterFallbackBehavior.Allow"/>.
-    /// </summary>
-    public enum ConverterFallbackBehavior
-    {
-        /// <summary>
-        /// Allows fallback to built-in converters. This is the default behavior.
-        /// </summary>
-        Allow = 0,
-
-        /// <summary>
-        /// Disallows fallback to built-in converters.
-        /// </summary>
-        Disallow = 1,
-
-        /// <summary>
-        /// Specifies the default fallback behavior as <see cref="ConverterFallbackBehavior.Allow"/>
-        /// </summary>
-        Default = Allow
-    }
 }